package com.atguigu.lease.web.app.interceptors;

import com.atguigu.lease.common.context.LoginUser;
import com.atguigu.lease.common.context.LoginUserContext;
import com.atguigu.lease.common.exceptionhandler.BusiException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import io.jsonwebtoken.Claims;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

import java.util.Enumeration;

@Component
public class AuthenticationAppInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String token = request.getHeader("access_token");
        if (token == null) {
            throw new BusiException(ResultCodeEnum.APP_LOGIN_AUTH);
        }else {
            Claims claims = JwtUtil.parseToken(token);
            Long userId = claims.get("userId", Long.class);
            String userName = claims.get("userName", String.class);
            LoginUser loginUser = new LoginUser();
            loginUser.setUserId(userId);
            loginUser.setUsername(userName);
            LoginUserContext.setContext(loginUser);
            return true;
        }
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        LoginUserContext.clearContext();
    }
}
